<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="信息描述">
        <el-tag type="info">excel模板说明</el-tag>
        <el-tag>
          <i class="el-icon-download"/>
          <a :href="OSS_PATH + '/excel/01.xlsx'">点击下载模板</a>
        </el-tag>
      </el-form-item>

      <el-form-item label="选择Excel">
        <el-upload
          ref="upload"
          :auto-upload="false"
          :on-success="fileUploadSuccess"
          :on-error="fileUploadError"
          :disabled="importBtnDisabled"
          :limit="1"
          :action="BASE_API + '/edu/subject/addSubject'"
          name="file"
          accept="application/vnd.ms-excel">
          <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
          <el-button :loading="loading" style="margin-left: 10px;" size="small" type="success" @click="submitUpload">
            {{ fileUploadBtnText }}
          </el-button>
        </el-upload>
      </el-form-item>

      <el-button type="submit" @click="test()">test</el-button>
    </el-form>
  </div>
</template>
<script>
export default {
  inject: ['reload'], // 注入重新加载当前界面的依赖
  data() {
    return {
      BASE_API: process.env.BASE_API,
      OSS_PATH: process.env.OSS_PATH,
      fileUploadBtnText: '上传到服务器',
      importBtnDisabled: false,
      loading: false
    }
  },
  created() {

  },
  methods: {
    // 上传方法
    submitUpload() {
      this.fileUploadBtnText = '正在上传'
      this.importBtnDisabled = true // 按钮是否禁用
      this.loading = true
      this.$refs.upload.submit()
    },
    // 上传成功
    fileUploadSuccess(response) {
      if (response.success === true) {
        this.fileUploadBtnText = '导入成功'
        this.loading = false
        this.$message({
          type: 'success',
          message: '导入成功'
        })
        // 路由跳转
        this.$router.push({
          path: '/edu/subject/list'
        })
      } else {
        // 后端返回失败
        this.fileUploadBtnText = '导入失败'
        this.loading = false
        this.$message({
          type: 'error',
          message: '导入失败'
        })
        this.reload()
      }
    },
    // 上传失败
    fileUploadError(response) {
      // 前端返回失败
      if (response.success === false) {
        this.fileUploadBtnText = '导入失败'
        this.loading = false
        this.$message({
          type: 'error',
          message: '导入失败'
        })
      }
    },

    // test
    test() {
      // const param1 = {
      //   'type': '1',
      //   'token': '2'
      // }

      const param2 = new URLSearchParams()
      param2.append('type', '1')
      param2.append('token', '2')

      const param3 = {
        'id': '1',
        'title': '标题',
        'parentId': '0',
        'sort': '-1'
      }

      this.$axios({
        method: 'post',
        url: 'http://localhost:81/edu/user/test',
        // headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
        headers: { 'Content-Type': 'application/json' },
        data: param3
      }).then(res => {
        console.log(res.data)
      }).catch(error => {
        console.log(error)
      })
    }

  }
}

</script>
